TETRADYNAMIA, SILTQUOSA. 67 
Stigma entire. Calizx partly gaping. “A gland 
situated between each of the shorter stamina 
and the calix.” Smirn. 
Leaves simple, ternate, pinnatifid or imperfectly pin- 
nate. . In some of the species there is occasionally an abor- 
tion of petals or of 2 of the stamina. 
Srecies. 1. C. spathulata. 2.teres. 3. virginica. 4- 
uniflora: 5. pennsylvanica. 6. pruteusis. In Labrador. 7. 
multifida. Pa. Leaves tripinnaufid, silique short. A Si- 
symorium? 
Within its natural limits almost exclusively an Euro- 
pean genus. 
459. BARBAREA. R. Brown. Erystmum. LE. 
«* Silique 4-sided-ancipital. Cotyledones ac- 
~cumbent., Seedsin asingle series. Calia erect. 
Glands disposed at the internal base of the shor- 
ter filaments.” R. Brown. Hort. Kew. 4, p. 
109, 
Leaves lyrately pinnatifid; stem branched; flowers yel- 
low, terminally racemose. ; 
Spectres. 1.B. vulgaris. Erysimum Barbarea. L. Hate 
Apparently indigenous in the northern states. This spe- 
cies, culled “ Yellow Rocket,” affords a fine double flow- 
ered variety.—Of this genus there is only a second species. 
and both are indrgenous,to Kurope. . 
460. SISYMBRIUM. LZ, (Water Cress: Water 
Radish.) 
Silique terminated by a short terete rostrum, 
valves nearly straight, not elastic, Calta and: 
corolla spreading. ee s 
Leaves mostly pinnatifid, pseudopinnate, or compound. | 
ed; Biers axifiry and solisars but more commonly in 
simple or paniculated racemes. Silique ovate, in S. am- 
phibium almost similar to the silicle of some species of 
Cochlearia, in many others.also short. Flowers often yel- 
Spxcres. 1.5. Vasturtinm. Truly indigenous. Abun- 
on the margins of ditches and. spongy springs im. 
Long Island. near New York,.&c. 2. palustre. 3. ampii= 
